Dresden 2014 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 30: Poster: Quantum dots and wires: Preparation, characterization, optical properties and transport

HL 30.20: Poster

Monday, March 31, 2014, 17:00–20:00, P2

Simulating SiGe/Si Self-Assembled Quantum Dots — •Torsten Wendav¹, Inga Fischer², and Kurt Busch^1,3 — ¹Humboldt Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, Berlin, Germany — ²Institute for Semiconductor Engineering, University of Stuttgart, Stuttgart, Germany — ³Max-Born-Institut, Berlin, Germany

The integration of optoelectronic functionality into Silicon-based devices has been of interest for quite some time. However, this has proven to be difficult, mainly due to material properties of Silicon [1]. A promising approach to circumvent these difficulties is the integration of Germanium quantum dots into Silicon.

While it is easy to grow Germanium quantum dots on Silicon it is hard to experimentally tune their optoelectronic properties, largely due to the sheer amount of growth parameters [3].

In order to obtain a deeper understanding of the relationship between growth parameters and optoelectronic properties of Germanium quantum dots, numerical simulations were performed. Combing both experimental and numerical results leads to a consistent physical picture of SiGe/Si self-assembled quantum dots [4].